AP BIOLOGY

Detailed explanation-1: -A cross between homozygous round seeds plant (RR) and homozygous wrinkled seeds plant (rr) will produce heterozygous (Rr) round seeds plants as F1 generation.

Detailed explanation-2: -This means that plants with both genotypes WW and Ww have wrinkled seeds, and only those with genotype ww have round seeds. If two plants of genotype Ww are crossed, the probability an offspring has wrinkled seeds is 3/4, and the probability it has round seeds is 1/4.

Detailed explanation-3: -Based on this observation round seeds is the dominant phenotype. With dominant being round seeds that would mean wrinkle seeds are the recessive trait. Therefore a cross of heterozygous for round with a homozygous recessive for wrinkled, will yield an F1 generation that has 50% round seeds and 50% wrinkle seeds.

Detailed explanation-4: -Since capital R = round and is dominant that means that RR and Rr will all be round seeds. That means that ¾ or 75% of the offspring produced will be round. Since, wrinkled is rr, then ¼ or 25% of the offspring will be wrinkled. The genotype is the gene make-up of the offspring.